Wrench.



F. H. SBRVATIUS.

WRENCH. APPLICATION FILED JAN. 14, 1910 Patented Jan 31', 1911.

il itzzess'esx QMMI/ WRENCH.

Specification of Letters Patent.

Application filed January 14, 1910. Serial No. 538319.

To all whom it may concern:

Be it known that I, FRED H. Ssuvvrius, a citizen of the United States,residing at Rockford, in the county of Winnebago and State of Illinois,have invented certain new and useful Improvements in I'Vrench'es, ofwhich the following is a specification.

The object of this invention is to construct a ratchet wrench in whichthe handle may be given an oscillatory movementin tightening orloosening a nut.

In the accompanying drawings, Figure 1 is an elevation of my improvedwrench in which a connect-ion is formed to loosen a. nut. Fig. 2 is asimilar elevation in which a connect-ion is formed to tighten a nut.Fig. 3 is a section on dot-ted line a (r Fig. 4. Fig. 4 is an end viewof the head showing the rectangular opening 15.

The wrench comprises the rest- 1, head 2 and intermediate crank section3. The head 2. has a central bore 4 having one end 5 of less diameterthan the other end, forming an internal annular shoulder. One face ofthis head is formed with ratchet teeth Send the.

other face is formed with ratchet teeth 7. A cylindrical socketmember 8is rotatably mounted in the bore 4, and has a portion of less diameterthat projects through said end 5. This member has an enlarged end 9formed with ratchet teeth 10 that coiiperate with the teeth '7 of thehead. The other end of the socket member is formed with screw threads12, and a holding plate 11 is screwed on to said end and is rovided withteeth 13 that coti crate with t io teeth 6. It will be ohserv byreference to Fig. 3 that by forming the socket member with two portionsof different diameters, a peripheral shoulder is produced that islocated in opposition to the internal shoulder of the bore. It will alsobe noted by reference to Fig. 3 that the portion of the socket memberwhich is of larger diameter, is of less length than the portion of thebore which is of larger diameter, and thus a space is left within thehead and around the socket member between the'two opposing shoulders. Inthis space and surrounding the smaller portion of the socket member is acoiled spring 14:, the endsv of which respectively bear against theopposing shoulders. The action of this spring is to hold the ratchetteeth 13 of the plate 11 in engagement with the ratchet teeth 6 of thehead 2,

as illustrated in Figs. 1 and 3.

By pressing against the nut 1, the ratchet teeth 7 of the head 2, willbe moved into engagement with the ratchet teeth 10 of the end 9, asshown in Fi 2.

In use, the shank o a socket tool fitted to receive a nut is placed inthe rectangular opening 15 in the cylindrical section 8, and the head isbrought into engagement with the end 9 of the cylindrical section and byturning the crank ortion 3 to the right the tool is rotated, w ich willturn a nut, a

partial revolution may be given the crank portion as the nut becomestight.

In loosening the nut, the spring 14 will force the head 2 intoengagement withthe plate 11. By turning the crank portion to the left,the tool will be rotated, or partially rotated, which will loosen thenut.

The connection of the cylindrical section with the head 2 is'such thatthe axis of rota- Patented Jan. 31, 1911.

tion and longitudinal movement of the 'cylin- A Wrench comprlsing arest, a head and a crank connecting the rest and head, said head havinga bore therethrou h, the bore having its end portions of diii erentdiameters, forming an internal annular shoulder, oppositely setteethformed upon the ends of the head and surrounding the bore, a socketmember rotatably mounted in the bore of the head and having portions ofdifferent diameters that are respectively located in the correspondingportions of said bore, forming a peripheral shoulder on the socketmember, the portion of the socket member that is of larger diameterbeing of less length than the portion of the bore which is of largerdiameter, leaving a space within the bore around the socket member andbetween the shoulders, and a coiled springlocated in said space andbearing against the shoulders, said socket member having enlarged endsprovided with teeth which coiiperatc with the teeth'of the head. Intestimony whereof I have hereunto so my hand in presence of twosubscribing witnesses.

FRED II. SERVATIUSJ Witnesses:

A. 0. Burma, E. I). E. N. BEHEL.

